sql语法大全..可以查找到基本所有的语法..还有具体详解..值得下载....

好东西当然要分享――Servlets and JSP API Documentation-chm-good things, of course, want to share-- Servlets and JSP API Documentation- chm

Java编程思想中文版!很好很强大！不要会后悔-English version of Java programming idea! Good is very powerful! Will not to regret! ! ! ! ! ! ! ! ! ! ! !

this math qutaton -this math qutaton

创建geodatabase,一本经典的建库作业指导.-geodatabase creation, a classic database operational guidance.

XML是一种新的技术，XML的出现使得数据的传输变得很灵活，这本书对初学者很有用的!-XML is a new technology, the emergence of XML allows data transmission become very flexible, this book very useful for beginners!

对IQ接收器最重要的两个参数,即I和Q两路分量之间的幅度一致性和相位正交性,可采 用如下办法计算:把I、Q 两路信号分别作FFT ,找出频域内信号的幅度,即可算得两路分量的幅度一 致性 把I、Q两路信号合成一个复数信号,作FFT ,对得到的频谱求镜像抑制比(即频域内的信号与信号镜像的幅度比) ,通过镜像抑制比和幅度一致性,可求出接收机的I和Q两路分量之间的相位正交性。-IQ receiver for the two most important parameters, namely I and Q components of two-way consistency between the amplitude and phase orthogonality may be adopted calculated using the following method: to I, Q 2 signals, respectively for FFT, to find a frequency domain signal amplitude, can be considered as two-way component caused by the range of 1 the I, Q 2 signals into one complex signal for FFT, the spectrum demand of the received image rejection ratio (ie, frequency domain signal and magnitude of the signal mirror ratio), through the image rejection ratio and extent of consistency, the receiver can be derived I and Q phase between the two-way component orthogonality.

Spring框架入门文档，对Spring框架的基础语义，高级特性和持久层技术，AOP编程有详细介绍-Spring Framework entry documents, on the basis of semantic Spring framework, advanced features and durable layer technology, AOP programming has a detailed introduction

介绍了一种用于心电监护的数字滤波算法，对滤波器的设计，包括滤波原理、整系数数字滤波器 的波型特征、实现方框图及10 点平均数字滤波器进行了分析，并给出心电信号的滤波效果图。实验结果表明， 该算法能有效滤除基线漂移和工频干扰，算法简单实用。-A new method for the introduction ECG digital filtering algorithm, the design of filters, including filtering principle, the whole coefficient of the wave digital filter characteristics, block diagram and realize an average 10-point digital filters are analyzed, and gives ECG filtering effect of Fig. Experimental results show that the algorithm can effectively filter out the baseline drift and power-line interference, the algorithm is simple and practical.

一些实用的METLAB程序，方便直接使用-METLAB a number of practical procedures to facilitate the direct use of

Smartupload 和commons-fileupload功能比较-Smartupload and commons-fileupload feature comparison